- Can an A record point to another domain?
- How do DNS work?
- How do DNS zones work?
- What is the A record in DNS?
- What is DNS zone types?
- What are the two types of DNS?
- What is A and AAAA record?
- What is primary DNS zone?
- What is Type A in DNS?
- What is the difference between A and NS records in DNS?
- Can a Cname record point to an IP address?
- Can an A record point to two IP addresses?
Can an A record point to another domain?
CNAME records must point to another domain name, never to an IP address.
A hostname defined in a CNAME record must have no other resource records of other types (MX, A, etc.), except for DNSSEC records like RRSIG and NSEC.
MX and NS records must never point to a CNAME alias..
How do DNS work?
DNS translates domain names to IP addresses so browsers can load Internet resources. Each device connected to the Internet has a unique IP address which other machines use to find the device. DNS servers eliminate the need for humans to memorize IP addresses such as 192.168.
How do DNS zones work?
A DNS zone is an administrative space which allows for more granular control of DNS components, such as authoritative nameservers. The domain name space is a hierarchical tree, with the DNS root domain at the top. … In fact, a DNS zone can contain multiple subdomains and multiple zones can exist on the same server.
What is the A record in DNS?
What is a DNS A record? The ‘A’ stands for ‘address’ and this is the most fundamental type of DNS record, it indicates the IP address of a given domain. For example if you pull the DNS records of google.com, the ‘A’ record currently returns an IP address of: 172.217. 5.78.
What is DNS zone types?
DNS Zone Types There are two types of zone files: A DNS Master File which authoritatively describes a zone. A DNS Cache File which lists the contents of a DNS cache—this is only a copy of the authoritative DNS zone.
What are the two types of DNS?
What are the different types of DNS server? All DNS servers fall into one of four categories: Recursive resolvers, root nameservers, TLD nameservers, and authoritative nameservers.
What is A and AAAA record?
An AAAA record maps a domain name to the IP address (Version 6) of the computer hosting the domain. An AAAA record is used to find the IP address of a computer connected to the internet from a name. … As with the A records, you can use multiple AAAA records for the same domain in order to provide redundancy.
What is primary DNS zone?
Primary DNS Zone: A Primary DNS zone is the original Read-Write Authoritative DNS zone of portion of a DNS Namespace. When a DNS Server hosts a primary zone, that DNS Server is considered as the Authoritative DNS Server and it is the primary source for information of that zone.
What is Type A in DNS?
DNS Types: 10 Top DNS Record Types The most common DNS record types are: Address Mapping record (A Record)—also known as a DNS host record, stores a hostname and its corresponding IPv4 address. IP Version 6 Address record (AAAA Record)—stores a hostname and its corresponding IPv6 address.
What is the difference between A and NS records in DNS?
The NS records specify the servers which are providing DNS services for that domain name. The A records point host names (such as www, ftp, mail) to one or more IP addresses. It is important to have both NS and A record in zone if you need to delegate sub-zone to different DNS server.
Can a Cname record point to an IP address?
A CNAME record must always point to another domain name and never directly to an IP address. A CNAME record cannot co-exist with another record for the same name.
Can an A record point to two IP addresses?
In either mode, a DNS A record must be defined with more than one IP address (known as DNS A record failover). The first IP address should point to the default, production server, and the other IP addresses should point to identical (or frequently synchronized) redundant servers.